Make burger patties by thoroughly mixing the ground beef, salt, pepper, and egg (mix by hand). Grill on medium heat for about 6 minutes on each side. Let rest 2 minutes before serving.

While beef is cooking, make the marmalade. Dice the lamb bacon & onion into small pieces, cook in a sautee pan over medium-high heat (about 3-4 minutes). Once they have cooked & gotten some color, pour in the balsamic vinegar & season with salt. Let it reduce until almost syrupy, approximately 6 minutes. Pour entire mixture into a food processor & pulse until it is transformed into a marmalade texture.

Spread the marmalade over the burgers & serve in buns. Sprinkle the bleu cheese crumbles over the marmalade.